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    Diffuse Light Curtain, 4/6/12/22 to 28 Beam, NPN/PNP

    SKU: SUCH-SLC-HLW30
    $113.09
    ● 4-28 optical beam optional ● 40mm optical axis spacing ● Default detection distance 0~2m ● Response time ≤30ms
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    🚚 Free shipping
    🕒 Delivery date: 6-12 days
    🔁 30-day Returns
    Overview

    Low cost diffuse light curtain, 40mm optical axis spacing, detection distance 0-2 meters, optical beam 4-28 optional. SUCH diffuse reflection light curtain sensor integrates transmission and reception, requiring no alignment, easy installation, and space-saving. Single-sided diffuse light curtain can be set with or without edges, with short-circuit protection and reverse connection protection, and has a sensitive response speed.

    Feature

    Diffuse light curtain feature

    • The single-sided diffuse reflection light curtain can be set to either edge-mounted or edgeless mode, requiring no alignment, making installation convenient and space-saving.
    • High-quality LEDs resist electromagnetic interference, with a detection distance of 0-2 meters, sensitive response, and stable reliability.
    • The diffuse light curtain sensor uses a high-quality aluminum alloy housing, featuring short-circuit and reverse connection protection, and a long service life.

    Dimension (Unit:mm)

    Diffuse light curtain size

    Distance adjustment

    Diffuse light curtain distance adjustment

    Bordered Mode:

    • After powering on, a short press of the button will cause the red and green lights to flash alternately, initiating automatic calibration.
    • Calibration takes approximately 1-2 minutes. Once calibration is complete, the green light will remain on.
    • If there is an obstruction, the red light will illuminate and an alarm signal will be sent.
    • To recalibrate, simply press the button briefly.
    • To switch to borderless mode, press and hold the button for 3 seconds.

    Borderless Mode:

    • There are 1-4 distance settings selectable, adjustable by short presses of the button.
    • The distance setting is indicated by the number of flashes of the green LED.
    • To switch to bordered mode, press and hold the button for 3 seconds.

    Tips: Please ensure the light curtain is fully installed and unobstructed before powering on.

    Wiring

    Diffuse light curtain wiring

    Specs
    Number of Beams 4-28 beams
    Optical Axis Spacing 40mm
    Detection Height 120-1080mm
    Detection Distance Default 0~2m
    Operating Voltage Typical Operating Voltage: DC24V
    Maximum Adaptable Voltage Range: 18V~30V
    Power Consumption ≤10W
    Output Type Default NPN normally closed
    Response Time ≤30ms
    Material Aluminum alloy
    Light Curtain Type Diffuse reflection
    Cross-section Dimensions 23*30mm
    Insulation Resistance ≥100MΩ
    Connection Type M8, 3-pin
    Dielectric Strength AC1500V.60S
    Electrical Life ≥120,000 hours
    Vibration Amplitude <5° Effective
    Short Circuit Protection Yes
    Reverse Connection Protection Yes
    Operating Temperature -10℃~55℃
    Storage Temperature -20℃~80℃, RH≤95%
    Application
    Stamping Machine Protection


    Stamping Machine Protection

    Assembly Line Protection


    Assembly Line Protection

    Die Casting Machine Protection


    Die Casting Machine Protection

    FAQ

    A diffuse light curtain is a photoelectric sensing system that detects objects using reflected light, without requiring an emitter–receiver pair. Both transmitting and receiving elements are built into the same housing.

    The diffuse light curtain sensor emits multiple infrared beams and detects the reflected light from an object. When an object enters the sensing area, the reflection changes and the light curtain generates a detection signal.

    A diffuse light curtain offers easy installation because it only requires one housing instead of separate emitter and receiver units. It is ideal for tight spaces, provides simple object detection without precise alignment, and is cost-effective for measurement or presence detection applications.

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